/* 修改最大宽度为1330px     */
@media screen and (min-width:1330px) {
    .container{
        width: 1330px !important;
        /* background-color: #fff; */
    }
}
ul{
    padding: 0;
    margin: 0;
    list-style: none;
}
a{
    text-decoration: none;
} 
a:hover{
    text-decoration: none !important;
}
/* 返回顶部 */
  
.back_to_top span {
    position: absolute;
    right: 50px;
    top: 600px;
    display: block;
    width: 40px;
    height: 50px;
    background-color: paleturquoise;
    display: none;
} 
header{
    position: relative;
    height: 75px;
    background-color: #c4c4c4; 
    opacity: .5;
    z-index: 99999;
}
.header{  
    position: relative;
    height: 75px; 
    background-color: #c4c4c4; 
} 
.logo{ 
    float: left;
    width: 100px;
    height: 75px;
    margin-left: 120px; 
}
.logo h1{ 
    margin: 0;
    line-height: 75px;
}
/* 导航栏 */
.nav{ 
    float: left;
    width: 600px;
    height: 75px; 
    margin-left: 100px;
}
.nav ul li{
    float: left;
    margin: 0 50px;
    line-height: 75px;
}
.nav ul li a{
    color: black;
    font-size: 24px;
}
.nav ul li a:hover{
    color: #fff;
    text-decoration: none;
}
/* 搜索框 */
.sear{
    position: relative;
}
.search{ 
    position: relative;
    float: left;
    width: 300px;
    height: 35px;
    outline: none;
    margin-top: 20px;
    padding-left: 15px;
    border-radius: 50px;
    border: solid 1px #fff;  
}
.sear button{
    position: absolute;
    top: 21px;
    right: 110px;
    outline: none;
    width: 70px;
    height: 33px; 
    color: #666;
    font-size: 16px;
    line-height: 28px; 
    border-top-right-radius: 50px;
    border-bottom-right-radius: 50px;
    border: 0;  
} 
/* .banner模块  */
 main{
     background: url(../images/a2.jpg) no-repeat ;
     width: 100%;
     height: 600px;
 }

 .book_text h3{  
    padding-top: 70px;
    text-align: center;
    color: #fff;
    font-size: 35px;  
    font-weight: 700;
}
.book_title{
    margin-top: 10px;
}
.book_title p{
    color: #fff;
    font-size: 17px;
    text-align: center; 
}
.book_form{
    display: flex;
    flex-wrap: wrap;
    margin-top: 70px;
    margin-left: 200px; 
}
input{ 
    outline: none;
    padding-left: 15px;
    flex-wrap: wrap;  
    width: 385px;
    height: 50px;
}
input:nth-child(1){ 
    margin-right: 30px;
}
input:nth-child(3){
    position: relative;
    top: -20px;
    left: 32px;
    cursor: pointer;
    margin-top: 20px; 
    width: 241px;
    height: 50px;
}
select{
    outline: none;
    width: 241px;
    height: 50px;
    margin-top: 20px; 
} 
.one,.two,.four{
    margin-left: 30px;
}
.two{
    margin-right: 20px;
}
.book_form button{
    position: relative;
    top: -20px;
    left: 0;
    width: 241px;
    height: 50px; 
    cursor: pointer;
    background: #EA3546;
    color: #fff; 
    font-size: 16px;  
    padding: 14px 30px;
    margin-top: 20px;
    margin-left: 30px;
    text-align: center;    
    border: 1px solid #EA3546; 
}
.book_form button:hover{ 
    background-color: #F9C80E; 
    transition: all 0.5s ease;
    border: 1px solid #F9C80E;
} 
/* 新闻列表 */
.new_list{
    position: relative; 
    margin: 0 10px;
    margin-bottom: 50px;
    float: left;
    width: 412px;
    height: 475px; 
    box-shadow: 0 0 15px 0 rgba(0, 0, 0, .3);
}
.new_list_pic img{
    width: 412px;
    height: 230px;
}
.new_list_title h3{
    padding: 30px;
}
.new_list span {
    display: block;
    position: absolute;
    bottom: 0;
    left: 0;
    padding: 30px;
    color: #999;
}
.new_list p{
    position: absolute;
    bottom: 0;
    right: 0;
    margin: 0;
    padding: 30px;
    color: black;
}






 /* 版权 */
#footer{
    width: 100%;
    height: 250px;
    background-color: #e6e6e6;
    margin: 10px auto; 
}
 .footer_nav{ 
     display: flex;
     justify-content: center; 
     padding-top: 50px;
 }
.footer_nav a {
    text-decoration: none;
    padding: 0 10px;
    color: rgb(168,168,167);
}   
.hr{
    width: 1130px;
    height: 1px;
   background-color: #999999;
   margin:10px 100px 0 100px ;
}
.font{
    display: flex;
    margin-left: 100px;
    padding-top: 30px;
}
P{
    padding:0 10px;
    color:rgb(168,168,167);
    font-size: 14px; 
}
.font_bom{
    padding-top: 10px;
    display: flex;
    margin-left: 100px;
}
.ww{
    background-color: #e6e6e6;
}
.font_bom img{
    width: 15px;
    height: 15px;
}